Whole-home duct cleaning
Dryer vent cleaning
Camera inspection
Sanitizing & deodorizingWhole-system duct and dryer vent check with before-and-after photos - you see exactly what came out of your vents
That "$99 whole-house special" is a bait ad - the real number appears once they are in your hallway, or the "clean" is a shop-vac at the register. We photograph the inside of your ducts before and after instead.
Fast, Reliable Duct Sealing Across Arcadia
Duct sealing in Arcadia typically runs $450 – $1,400 for a single system, with most homes falling between $600 and $900 depending on duct length, access, and how many joints actually need work. Leaky ducts in Arcadia don’t just waste conditioned air. They pull attic dust, fiberglass particles, and San Gabriel Mountain pollen into your living spaces, and they force your HVAC system to run longer than it should. Our crews work in Arcadia weekly, we know the older ranch homes south of Huntington Drive and the sprawling estates north of Foothill Boulevard, and we show up with a written price before anything gets touched. Call (626) 469-5477 for a free estimate.
Why Hollis Air Duct Pasadena Is Arcadia’s Preferred Duct Sealing Company
We’re the duct sealing team Arcadia homeowners call when they want the job done once. The crews wear uniforms, they’re background-checked, and they answer to The Garrison Code: arrive inside the quoted window, price in writing, work by the book, leave the site clean. No exceptions, no moving targets.
What sets us apart is the 365-Day Done Right Promise. If a sealed joint fails within a year, we come back at no charge. That’s a free second visit, written into the job paperwork before we start. Arcadia homeowners with zoned systems, long duct runs, and 4,000-plus-square-foot floor plans understand why that matters. A small leak in a far attic run can throw off temperatures in an entire wing of the house.
Roy Castellanos leads our team, and he’s built the operation around a simple standard: show the customer what’s wrong, price it before we fix it, and stand behind the work. That’s why we stock mastic, foil tape, and replacement flex duct in our Los Angeles operations hub, so an Arcadia job doesn’t stall waiting on parts.
Styles & brands we work with
HVAC Duct Sealing in Arcadia
HVAC Duct Sealing in Arcadia is the process of closing every leak point in your ductwork: joints, seams, boots, and plenum connections where conditioned air escapes into unconditioned spaces like attics and crawl spaces. When we seal ducts in a mid-century ranch near Baldwin Avenue or a newer custom home off Santa Anita Avenue, we clean the seam first, apply mastic, and reinforce with foil tape where the joint takes stress. Mastic is a paste-like sealant that hardens into a durable, airtight bond; foil tape does the mechanical clamping. Together they stop the leaks that make your system work harder.
You need this when rooms heat or cool unevenly, when dust reappears quickly after cleaning, or when your energy bills run high during Arcadia’s hot, dry summers. A typical HVAC duct sealing job in Arcadia runs $450 – $900 for a standard system. Larger zoned estates can reach $1,400 when they involve multiple returns and long attic runs.
Sealing Metal Ducts in Older Ranches
The 1950s and 60s ranch homes scattered through Arcadia often still have original galvanized metal ducts. Over decades, the seams corrode and separate, leaving pinhole leaks you can’t see from the register. We seal those with mastic brushed directly onto the seam, not sprayed, so it fills every gap. The result is a quiet fix that returns airflow to the rooms farthest from the blower.
Sealing Flexible Ducts in Custom Estates
Newer Arcadia homes north of Foothill Boulevard frequently use flexible duct in long attic runs. Flex duct sags between truss spans, and where it sags, the inner liner separates or the outer jacket tears. Sealing means reconnecting the inner liner to the collar, taping it properly, and sometimes replacing a crushed section outright. We don’t just tape over a failing flex run. We fix the support so it doesn’t sag again.
Duct Repair in Arcadia
Duct Repair in Arcadia means physically fixing what’s broken, crushed, or corroded before we seal. Some companies seal around damage. We don’t. A crushed flex duct or a disconnected metal run will keep leaking air and pulling attic debris no matter how much sealant you put on the outside. On an Arcadia job, repair might mean cutting out a corroded section of metal duct and splicing in new galvanized steel, or replacing an entire flexible run that’s collapsed under its own weight.
You need duct repair when you hear whistling from supply vents, when one bedroom never reaches the thermostat’s set temperature, or when our camera inspection shows a disconnected joint inside the attic. Duct repair in Arcadia generally runs $250 – $600 for a single run or section, and moderate jobs that combine repair with sealing land in the $700 – $1,100 range.
Crushed Flex Duct Replacement
In the sprawling floor plans north of Foothill Boulevard, flex ducts sometimes stretch 30 or 40 feet between the plenum and a far register. That’s a long span, and if the original installer hung it with inadequate supports, it sags, kinks, and crushes. We find this on camera, cut out the damaged section, and install a new run with proper support straps every 4 to 5 feet. Airflow comes back immediately.
Corroded Metal Duct Section Repair
Older Arcadia ranches have sheet metal ducts that rust along the bottom seams where condensation collects. These pinhole leaks pull attic air, fiberglass particles, and whatever’s settled up there into the supply stream. We cut out the corroded section, slip in a replacement, and seal every seam with mastic and foil tape. It’s a real fix, not a patch.
Trusted Brands We Service in Arcadia
We work on all major residential duct systems, and we stock parts for the brands Arcadia homeowners already have. That includes filtration products from Aprilaire and Honeywell, negative-air equipment from Abatement Technologies, and rotary brush systems from Rotobrush. When we seal and repair ductwork on a custom home off Orange Grove Avenue, we’re matching the job to the system that’s already installed, not forcing a one-size-fits-all retrofit. And because our parts trailer carries standard flex duct sizes, mastic, foil tape, and metal sections, most Arcadia jobs are done in a single visit.
Common Duct Sealing Problems We See in Arcadia Homes
- Construction debris left inside ductwork. In the large custom estates built north of Foothill Boulevard since the 1990s, we regularly find drywall scraps, sawdust, and even soda cans left inside ducts from the original build. That debris abrades seals and contaminates airflow. We remove it before sealing, because mastic over debris is wasted work.
- Pinhole leaks in corroded metal seams. The mid-century ranch homes south of Huntington Drive still carry original galvanized ductwork. Decades of Arcadia’s wet winters and hot, dry summers have rusted the bottom seams. These tiny leaks quietly pull attic air into the supply stream, and you’ll notice it as dust that comes back days after a deep clean.
- Sagging flex duct in long attic runs. North of Foothill Boulevard, the custom estates have long truss spans and multiple zones. Flex duct sags between supports, separates at poorly taped joints, and sometimes collapses entirely. Sealing alone won’t fix a crushed run. It has to be replaced and re-supported.
- Santa Ana wind dust infiltration. When the Santa Anas blow through Arcadia in the fall, fine particulates from the San Gabriel Mountains and the dry foothills push into every gap in a home’s envelope, including unsealed duct joints. Sealing those joints is the difference between a house that stays clean after a duct cleaning and one that re-contaminates within weeks.
See the difference
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AfterPricing for Duct Sealing in Arcadia, CA
Duct sealing in Arcadia runs $450 – $1,400 for a complete single-system job. The most common range we quote is $600 – $900. What moves the number: how many linear feet of duct you have, whether the attic access is walkable or cramped, how many joints need mastic and tape, and whether we’re repairing crushed flex or corroded metal before we seal. A straightforward 1,800-square-foot ranch with accessible ductwork often lands near the bottom of the range. A 4,500-square-foot zoned estate with long attic runs and multiple leaks will land higher. Every job gets a written price before work starts, and that price doesn’t move at the door. Call (626) 469-5477 for a free estimate on your Arcadia home. We’ll come out, inspect the system, and give you the number in writing.
We Also Serve Cities Near Arcadia
Our Duct Sealing crews cover the surrounding area as well. We regularly work in Monrovia, Temple City, San Gabriel, and Duarte. If you’re in one of those cities, the same written pricing, same 365-Day Done Right Promise, and same local crew apply. Duct Sealing in Arcadia remains our home base for scheduling in the San Gabriel Valley, and dispatch is coordinated from our Los Angeles office to keep response times short.
Serving Arcadia, CA - Our Local Coverage Area
We’re based in the Arcadia area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Duct Sealing in Arcadia
Because the leaks are in the ductwork itself, not the dust inside it. Cleaning removes the accumulated debris, but it does not close the corroded seams or separated joints that let attic air back in. In a mid-century Arcadia ranch with original galvanized ducts, those pinhole leaks at the bottom seams will re-contaminate the system within weeks. Sealing after cleaning is what makes the clean last. Call (626) 469-5477 and we’ll inspect yours.
We remove it first, then seal. Construction debris inside ducts, which we find regularly in Arcadia’s newer custom builds north of Foothill Boulevard, acts like sandpaper against mastic seals and keeps blowers working against partial blockages. Our techs use negative-air extraction and rotary brush systems to pull out drywall scraps, sawdust, and construction material, then seal every accessible joint. Sealing around debris is a warranty we won’t write. Get an exact quote by calling (626) 469-5477.
Sealing stops the air you’re paying to condition from leaking into the attic before it reaches the zone it’s meant for. In the large custom homes north of Foothill Boulevard, zoned dampers and long duct runs mean a single leak can starve an entire wing of the house. When we seal those joints and repair sagging flex, zone temperatures even out, and the blower stops fighting collapsed airflow. It’s usually a one-day job in Arcadia.
Yes. When Santa Ana winds push fine mountain dust and pollen into Arcadia, every unsealed joint in your attic ductwork becomes an entry point. Sealed ducts mean that dust stays in the attic where it belongs, not in your supply stream. It’s one of the highest-impact fixes for Arcadia homeowners who dust every few days and still see a film on furniture. Call (626) 469-5477 for a free estimate and we’ll tell you if your ducts are the source.
Yes. We follow NADCA standards for source removal, cleaning, and sealing on every Arcadia job. That means we’re not doing a surface-level wipe down. We’re extracting contaminants, verifying airflow, and sealing according to a published industry standard, not a salesperson’s guess. The 365-Day Done Right Promise backs the work in writing.
How Duct Sealing Works in Arcadia Homes
Every home is different, and in Arcadia that difference is stark. The 1962 ranch off Duarte Road has galvanized metal ducts that have been quietly corroding for six decades. The 2003 estate off Santa Anita Avenue has flexible ducts sagging between wide trusses, with construction debris still inside from the original build. What both homes share is this: the ductwork leaks, and the leaks cost money, comfort, and air quality.
On a 4,200-square-foot custom estate north of Foothill Boulevard, our techs used a camera inspection to locate a severely crushed flexible duct in the attic. The blower motor was straining against collapsed airflow. We replaced the sagging run, then applied mastic and foil tape to every accessible joint on the supply and return ducts, and finished by verifying negative pressure at the air handler. The homeowner reported zone temperatures evened out within a day.
That’s what duct sealing in Arcadia actually looks like. Not a generic suburban job with a spray can and a coupon. It’s an inspection-driven fix tailored to whether your house was built in 1958 or 1998. Call (626) 469-5477 and we’ll show you what your system needs.
Written by Roy Castellanos, Owner at Hollis Air Duct Pasadena, serving Arcadia and the San Gabriel Valley since 2004.